Should rules have an assumption about aria-busy?

[WilcoFiers]

This comes from an ARIA review

We currently only have one rule that has an exception for aria-busy. I think for that rule it is a reasonable thing to have. I'm less sure about other rules, it seems unlikely that aria-busy is going to resolve issues such as invalid roles, or missing text alternatives. Even if not, should rules have an assumption that content is loaded?

[Jym77]

Decision: add an Accessibility Support note to every rule using "Accessibility tree" as input aspect, stating that "aria-busy exists but isn't widely supported (JAWS only, currently, it seems), so the rule ignores it".